Adjustable tracing device for machines



March 1958 T. w. KALBOW V 2,825,270

ADJUSTABLE TRACING DEVICE FOR MACHINES Filed Oct. 28, 1954 I 5Sheets-Sheet 1 I w /-'/6. 37' I S L 9i 42 38 37 M/VENTO f [Ml/(meowMarch 4, 1958 T. w. KALBOW 2,825,270

ADJUSTABLE TRACING DEVICE FOR MACHINES Filed Oct. 28, 1954 3Sheets-Sheet 2 /A/V/V7'0R ZW/mwow 7 8% As} 77 4am,

33 A 77' (JR/V5 y March 4, 1958 T. w. KALBOW 2,825,270

ADJUSTABLE TRACING DEVICE FOR MACHINES Filed Oct. 28. 1954 5Sheets-Sheet 5 United States Patent-= ADJUSTABLE TRACING DEVICE FORMACHINES eodor w-t alho whica h, 1, si o Y' t t i.v

Electnc Cornpany, Incorporated, New york, N. Y., a corporation or New1017K Applicationtfl to 2 19 W?! N1." 4 5 275";

4 aim !t Thisinventionrelatestotduplicating devices for. cuttingmachines andimore particularly totsucn devices-having ad ustable.tracing units a Ant ob ect or. the present invention is to, provide anad.

justable Ltracing attachment v-r'or, cutting machines Another ob ect ofthe invention is to provide a tracing;

unitand cooperating tern plate for use in a cutting machine and capableot-belng adjusted for cutting tools of/ dif;

ferent sizes.

A device illustratingcertain features of the invention as :applied.to .acutting apparatus having a cutter head and cutting toolirnovablevertically and laterally and a work holder movable longitudinally may.include an ad,.

justableitracingunitl mounted on the cutting,head for--.r

movement therewithland. having a conical vfollower ens; gageablewithrabeveled guiding su'rfaceof a horizontally;

disposed template fixed to the tworkpholderfor guiding thetracing unitandthe. cutting tool through; a predeterm.

minedpath relative. to .,the workto cut the twork along-ii apredetermined cutting line.

supporting memherof the tracing unit and ,hastagaging surrace inspacedrelation to. a gaging surface onflthetsupe-t The conical-shaped i fol-W1 lower is adjustably mounted for vertical movement .ima

portingmember for,rec.ei ving a gageior. a cutter,- ofna predeterminedrnaximumnv size .there between ,for. setting a the conical :followerlint-a. predetermined first ,vpositioneont,

the -supp,orting;; rnernber, after which thenfolloweriiisi'i clamped insaid first position by suitablegclarnpingmeans. i

Thecutting head is lowered to a predetermined cutting a level-andoriented relative to the work piece, in which position of thecuttinghead the conical follower is seated.

against lthebeveled surface of the template and the tracing. unit isclamped-in this position to the cutter head for-use with said maximumsized cutter.

If it is desired to use-a smallercutter, the followerisloosened-in thesupporting member and the smaller cutter is placed betweenthe gagingsurfaces of the follower and the supportingmember and the follower ismoved upwardlyto the extent permitted by the smaller cutter to a secondposition, after which the follower is,

clamped to the supportingmember in said second position and the cutterremoved from the tracing unit and secured in the cutter head. With thecutter rotating, the cutter; ea is,, we ed. t s i p e e e m n u ti ve tcause the 1 s al er c t r .tocut. a .h le, time wo kv p ce clamped insaid work holder, ,and the cutter, head is I then 4 m il t al 4 cause tes q hw rt e aaew eh vet mp hte ot t u d e e y-1- hea angle o ,t ejs iclas rf c hfil f l w nd o h m-Q beveled, guiding; surface of the templateare such that when t he jollower-risraised to its second position suf;

fiqie itt c e rance. s provided pe m low ,t

ore l te lly, i t en a emen w h h ev e t I aP -fef t et hpla ea d stancee ual. am-ma shes h m 211 e radii (p he m ximum. s zed and t e ma er s tcutters ant bthe eby a i n, h cuttinasdae o thi ti ler],

ice

tter:W h e etermi ed-L Putti e. fi e Work Peseot er H objects and;advantages of the invention will I 9W re 'et WRWWQH 5 W M m q l l QK PWP9 t ta e mrehyme maw u w lt 'l g P ue-hm e ia s hhs 1 8 953 i a rig. ll1s a rront elevanonal V ew ora cutting machine 5 h a e hhee ha t a n s ui shed, t et rig; s a perspec ive view or a work piece ornpiece ara jwha P i 13 9.11 e sts r g. 3 1s a perspective view or a master setupelement for use rnlsetnng up the apparatus;;

rug, 4 is an enlarged rragmentarynvertical sectional,- vhtwnh iv r of Ia u mm I m s er 9 elemen there n; 5

mg. 3 l8 a Iragrnentaryvertical sectional view similar 1 to, a portionof 1 1g. 5 showing the work piece clarnped in V e wi h n isier I N einpositiontherein in dotted 111165 a rig is a tragrnentary sectionalview showing tne adjustaolc Iracin unit mounted on the cuttingnead and 11n} spacedrelat ort to; theprofiling template mounted on of the Strac nginn a-9 a h aht t tiqhe r wa h t e ihe ken on tneline 979. of Fig. 8; v

.Fig. lot is a deta dyievv of several of the components. v ft el cih unh ete fr at 9at th rti he theerof broken'away; and

-Figs.- ll and 12 are enlarged fra grnentary,diagrammatic 'yiewjsshowinghthe tracing; unit and cutting tools in dhflerent positions ICC'Th e, .wo.rk piece 23 is vclamped in a yvorklholder 33 on a table34vwhich is mounted fortvlongitudinal horizontal movement on a bed 35 ofthe profiling apparatus. 7 A pair of upright frame members 36 haveguides 37 thereon for supp ting across slide38' for horizqntaltransverse v movement andfa cutter head 40 secured to a slide 41- 1smounted ,on the cross .slide' 38 for vertical movement in guides 42 Thecutter head 40 hasla spindle-dand-a drive mptorAS therefore and thespindle 44- hflsa chuck 4'7 orother meansprovided with a socket 48 inwhich the shank of an endr 'mill .cutter 49 may .be secured. bye.

any suitable means. An adjustable tracing unit 53 is secured tp lhecutter head 40 for movement therewith and 54H(Figs. 1, 4, and.,5)cooperable 1s secured to the work holder 33.7

a horizontal template with the tracing unit The table 34, the crossslide 38, and the vertical slide 41, are reciprocable in theirrespective directionsflunder control of manually operatedcontrolelements55, 56, and

57 for effecting relative movement between theacutterw 49 and the workpiece 23 in a well-known manner. The work holder 33 has a circularseat63 (Figs. 4-6) extending laterally therefrom adapted to fit into oneof' the counterboreszii of the work piece andi haviiig a" cyl ndr calsurface i i- 3 engageable withfthe cylindrical surface of thecounterbore 28 having an end surface 65 engageable with the shoulder 660f the work piecev23. The against the seat 63 by a hinged clampingmember 67 pivoted at 68m a fixed hinge mernwork piece 23 isclamped ber69 se cure d to the holder 33, and the clamping mem,

70 threaded ly and adj'ustably mounted on fone endof a d 7 t e. e

Patented Mar. 4, W53

Q sgec rtit nal viewofthe work holder showd tragrnentary verticalsectional view.

t end of which iS pivotiall y supported aq 72 on the work holder 33. Apressure equalizing plate 73 which has a lug 74 fitting in an aperturein the clampng member 67 and pivotally connected thereto at 75 isadapted to engage one face of the transverse portion 26 of the workpiece 23 and in cooperation with the clamping member 67 clampthe workpiece onto the seat 63 of the work holder. The circular portion 24 ofthe work piece is engaged in opposite sides by a pair of parallelpositioning arms 76 (Fig. 6) for holding the work piece 23 in apredetermined angular position on the seat 63 with the disc portion 24thereof disposed horizontally. The positioning arms 76 are fixed toopposite ends of the template 54 which "is in the form of a platesecured to a pad 77 on the upper portion of the work holder 33.

The template 54 has an elongated opening or slot 83 therein with beveledguide or profiling surfaces 84 adapted to cooperate with the sloping orconical surfaces 85 of a follower member 86 forming a part of theadjustable tracing unit 53. The enlarged lower end-of the follower 86forms a head with a fiat annular shoulder or gaging surface 88 (Figs.l-l2) and a threaded shank 89 extending upwardly therefrom and isadjustably mounted within a bore 91 (Fig. 8) of a supporting sleeve 92forming a part of the tracing unit. The sleeve 92 has an internallythreaded portion 93 engaging the threaded shank 89 and has a counterbore94 (Fig. in the lower end thereof for receiving the head ofthe f llower.An ad justing rod or tool 95 rotatably supported within the sleeve 92has a tongue 96 at its lower end engageable in a slot 97 in the upperend of the shank 89 of the follower and has a knurled upper end thereofprojecting above the sleeve 92, whereby it may be engaged by theoperator and turned to adjust the follower 86 vertically relative to thesupporting sleeve 92.

At its lower end the sleeve 92 is longitudinally slotted at 99, 99 toprovide a plurality of yieldable fingers 100 actuatable into engagementwith the head of the follower for clamping itin adjusted position. Thefingers 100 have upper conical cam surfaces 101 which are engageablewith an annular cam surface 102 on a collar 103.

which has an internally threaded portion 104 engageable with theexternally threaded portion 105 of the sleeve 92. The lower portion ofthe sleeve 92 and the collar 103 forms a collet shuck which may beactuated by rotating the collar 103 to cause the gripping fingers 100 torelease or grip the follower 86.

The lower end of the sleeve 92 has a transversely disposed cylindricalaperture 106 formed therein extending diametrically through a pair offingers 100 adjacent the lower ends thereof for receiving a setup gage107 or end mill cutters 108. The setup gage 107 (or cutter 49) may beinserted in one ofthe apertures 106 and moved upwardly with the sidethereof in engagement with the upper gaging surface 109 of aperture 106and the follower 85 is rotated witha micrometer feel to raise the gagingsurface 88 of the follower into engagement with the lower surface of thesetup gage (or cutter) and the collar 103 tightened to lock the followerin' a predetermined set position in the supporting sleeve 92 of thetracing unit 53. In this manner the follower may be adjusted in thetracing unit to various positions, according to the size of cutter used,for cooperation with the bevel surfaces 84 of the template 54 to permitthe use of cutters of different sizes of cutting the work piece along apredetermined cutting line The sleeve 92 of the tracing unit 53 isslidably mounted in the bore 110 of a bracket 111 in vertical alignmentwith the slot 83 of the template 54. The bracket 111 is secured to thecutting head and has a slot 113 (Figs. 1, 4, and 7) therein extendinginto the bore 110 to form a clamping flange 114 which is, adapted to bemoved toward a cooperating flange 115 by a pair of clamping screws 116.After the follower 86 has been adjusted to and secured to the sleeve 92in itsfirst position the clamp- 1 ing screws 116 are loosened and thetracing unit 53 is lowered into engagement with the template 54 to causeopposite sides of the conical surface of the follower 86 to contact twoportions of the beveled surface 84, after which the clamping screws 116are tightened to clamp the supporting sleeve 92 and the tracing unit 53to the bracket 111.

As a first step in setting up the apparatus, a master setup element 120(Figs. 3 and4) is clamped to the holder 33 with the seat 63 inserted ina recess 121 in the setup element and with the surfaces 64 and 65 of theseat 63 engaging surfaces 122 and 123 in the recess 121 of the element(Fig. 4). The setup element 120 has an aligning pin 125 which ispositioned vertically upwardly for engaging the spindle chuck 47 in thetool socket 48 thereof for orienting the cutter head 40 and spindle 44in a predetermined relation to the work holder 33 and the work piece tobe clamped thereon so that a cutter 49M (Fig. 11) of a predeterminedmaximum size equal tothe width of the slot 22 may be set in the spindlechuck 47 and the peripheral cutting edges of the cutter 49M will be in aposition to cut the work piece along both of the predetermined cuttinglines 128 of the work piece.

After the cutter head 40 andthe spindle 44 have been aligned by themaster setup element120, the cutter head may be raised and the setupelement 120 removed from the work holder 33. The locking collar 103 ofthe tracing unit is unscrewed to release the follower 86 and thecylindrical setup plug 107 having a diameter the same as that of themaximum sized cutter 49M is, inserted in the aperture 106 in the sleeve92 in engagement with the upper gaging surface 109, and the follower 86is rotated by means of the adjusting rod 95 to elevate the gagingsurface 88 thereof into contact with the lower surface of the setup plug107 to set the follower 86 in a predetermined first position on thesleeve 92, after which the locking collar 103 is turned to lock thefollower in said first position.

The cutter head 40 is then lowered to a predetermined position so that acutter 49, when secured thereto will cut to the desired depth in thepiece part 23, and an adjustable stop 132 on a guide 42 of the crossslide 38 is set to engage a stop 133 onthe slide 41 and stop the cuttinghead and the cutter 49 at the desired position. The bracket 111 is'firstloosened by loosening the screws 116 and the follower 86 moveddownwardly with the conical surface 85 thereof in engagement with thebeveled surfaces 84 of the template. The clamping screws 116 are thentightened to clamp the tracing unit 53 in this position, The cutter head40 may then be raised and a work piece 23 clamped in a position on theholder 33 preparatory to the cutting operation.

If the cutter 49M of maximum size equal in diameter to the exact widthof the slot 22 is used it will cut simultaneously along both of thepredetermined cutting lines 128 of the work piece and cut the slot 22 inone straight movement of the work relative to the cutter. However, ifthe cutter of said predetermined maximum size is not available, othercutters of smaller sizes may be used and the follower 86 of theadjustable tracing unit 53,

may be set to position the cutters of smaller size in positions so thatthey will follow and cut along successive portions ofthe cutting lines128 of the slot 22 in the work piece. To use an available cutter 498 ofsmaller size than the maximum sized cutter 49M the cutter head 40 israised and the locking collar 103 of the tracing unit 50 is turned toloosen the follower 86, and the end of the smaller cutter 495 isinserted in the aperture 106 in the sleeve 92 and positioned against theupper gage surface 109 thereof after which the follower 86 is rotated bymeans of the adjusting tool 95 to move the gaging surface 88 of thefollower into engagement with the lower surface of the smaller cutter498 'with a pressure similar to that used in measuring articles withmanager. is

removed afrom'; the..tracing....unit .53. andusecurediin theil socket;48 3 of :the. spindle. chuck:.47::::;.TheT' motor-p.45 :is.

started and the cutter head 40 is lowered to its cutting position withthe stop 133 in engagement with the cooperating stop 132, causing thecutter 49S to mill a hole in the work piece 23. With the cutter head 40in its lowermost position the follower 86, because it is in its secondposition in the tracing unit will be disposed above its former firstposition a distance X (Fig. 11) equal to the difference between thediameter of the maximum size cutter 49M and the selected availablesmaller sized cutter 498. The raising of the follower 86 this distance Xprovides a clearance between the conical surface 85 of the follower andthe beveled surfaces 84 of the template 54 and the angle of the beveledprofiling surfaces 84. and the conical surface 85 is such (26 34' fromthe vertical) as to permit a lateral traverse of the follower through adistance equal to AX to engage the conical surface 85 of the follower 86with the beveled surface 84 of the template. This lateral traverse of/2X of the cutting head 40 and the smaller cutter 49S is equal to thedifference in radii between the cutters 49M and 49S and will align theperiphery of the smaller cutter 49S with the cutting line 128 of thework piece 33 as indicated diagrammatically in Fig. 12. The apparatusmay then be manipulated to effect relative horizontal movement betweenthe cutter 49S and the work piece 23 and to engage the follower 86 withthe horizontally disposed beveled guiding surface 84 of the template 54and eifect movement of the follower along successive portions thereof tocause the cutter 49S to follow a predetermined path and cut along thecutting line 128 of the work piece. In this manner the smaller cutter49S cuts along successive portions of the cutting line 128 in the workpiece 23 and follows it through a predetermined path according to themovement of the follower 86 along the beveled profiling surface 84 ofthe template.

When one slot 22 has been cut the work piece 23 is removed from the workholder 33 rotated horizontally through one-half turn, reclamped to thework holder and the second slot 22 is cut therein.

While in the embodiment of the invention disclosed herein opposite sidesof the follower 86 are shown as engaging and being contacted by twoportions of the beveled profiling surface 84 (Fig. 11) during thesetting up of the apparatus, when the apparatus is used for cutting awork piece along cutting lines of a different configuration and atemplate is used having a different pattern of beveled profilingsurfaces 84, it will be understood that the tracing unit 53 will belowered into engagement with the template 54 and the conical follower 86will engage only a single portion of the profiling surface 84 toestablish the setting of the follower 86 to its first position for acutting operation of the apparatus with the maximum sized cutter. When acutter smaller than said maximum sized cutter is to be used the follower86 is adjusted on the supporting sleeve 92 to its second position in thesame manner described above.

It is to be understood that the above-described arrangements are simplyillustrative of the application of the principles of this invention.Numerous other arrangements may be readily devised by those skilled inthe art which will embody the principles of the invention and fallwithin the spirit and scope thereof.

What is claimed is:

1. In a device for controlling the movement of one body relative to asecond body, the combination of a tracing member capable of beingoperatively connected to said one body for simultaneous movementtherewith parallel to a predetermined plane, a follo r h g aconicalrzsunfaeetmotintediisonesaid: tracingzme'tttber; 131" movement;therewithnand; for, .moyementrrelatine, =thereto; I

inu-a directioniperpendicularato said planeata. templa eaa-blemfbeingmountedinvfixedirelation to. rid r-$9 4.I;bodyand;parallel-to said plane;zand;havingta,-track of a,

predetermined configuration with a beveled surface posed obliquely tosaid plane and engaging said follower for guiding the tracing memberthrough a predetermined path parallel to said plane, and means foradjusting the position of said follower on said tracing member alongsaid direction to effect lateral adjustment of the tracing memberrelative to the template.

2. A tracing device for a machine using a cutter which comprises atemplate having a guide track with a beveled surface of a predeterminedcontour, a follower having a conical surface engageable with the beveledsurface of said template and having a threaded shank, a member having athreaded portion engageable with the threaded shank of said follower forsupporting the follower for adjustable movement in a directionperpendicular to the template, said follower having a gaging surfacedisposed parallel to the template, said supporting member having agaging surface disposed parallel to the template and cooperable with thegaging surface on the follower for engaging opposite sides of a cutterpositioned therebetween to set the follower in a predetermined positionon the supporting member in accordance with the size of the cutter to beused, means for rotating the follower to adjust it in said direction toobtain a proportional lateral adjustment of the follower and thesupporting member relative to the template, and means for securing thefollower in adjusted position on the supporting member.

3. in a work cutting apparatus using a cutter and having a work holderand a cutter holder, a device for controlling the relative movementbetween the work holder and the cutter holder which comprises a tracingmember operatively connected to the cutter holder for movement therewithparallel to a predetermined plane, a follower having a conical surfacemounted on the tracing member for movement therewith and for movementrelative thereto along an axis perpendicular to the plane, a templatemounted in fixed relation to the work holder and parallel to said planeand having a beveled guide surface of predetermined configuration forengaging the conical surface of the follower and guiding the tracingmember through a predetermined path parallel to said plane, means foradjusting the follower on the tracing member along said axis to obtain apredetermined lateral adjustment of the tracing member relative to thetemplate, and gaging surfaces on said tracing member and on saidfollower engageable with opposite sides of the cutter to be used in theapparatus for setting the follower in a predetermined position on thetracing member in accordance with the size of the cutter.

4. In a work cutting apparatus using a cutter and having a work holderand a movable cutter holder, a device for controlling the movement ofthe cutter holder relative to the work holder which comprises a tracingmember operatively connected to the cutter holder for simultaneousmovement therewith parallel to a predetermined plane, a rotatablefollower having a conical surface, means mounting the follower on thetracing member for movement therewith and for axial movement relativethereto perpendicular to the plane, a template mounted in fixed relationto the work holder and parallel to said plane and having a beveled guidesurface of predetermined configuration for engaging the conical surfaceof the follower to guide the tracing member through a predetermined pathparallel to said plane, means for adjusting the follower on the tracingmember in an axial direction to effect lateral adjustment of the tracingmember relative to the template, gaging surfaces on said tracing memberand on said follower engageable with opposite sides of the cutter to beused in the ap- References Cited in the file of this patent paratus forlocating the follower axially in a predetermined position on the tracingmember in accordance UNITED STATES PATENTS with the size of the-cutter,and means for releasably se- 1,552,061 Krebs Sept. 1, 1925 curing thefollower onto the tracing member in adjusted 5 2,557,876 Klema June 19,1951 position. 2,607,989 Peterson et a1. Aug. 26, 1952

